Feed-water heater.



' PATENTED APR.14 1908.

885005 G. w. 'J. WHITE.

FEED WATER HEATER. v APPLIOATION FILED 110V. 20, 1905. RENEWED AUG. 7,1907.

3 M fQK 0., WASHINGTON. n. c.

No.'885,005. V

(aw. J. WHITE.

PATENTED APR.14, 190s.

PBED WATER HEATER. APPLICATION FILED NOV; 20, 1906f RENEWED AUG. 7',1907.

2 SHEETS-SHEET 2.

l IIH III lJllll HIII Illlll \W 6 iilllllll-lllllllll THE NORRIS PETERSco, wAsHmnrolv, a. c.

. by declare the followin to be a full, clear,

UNITED STATES PATENT OFFICE.

GRANVILLE WILLIAM JOHN WHITE, OF RYDE, NEW SOUTH WALES, AUSTRALIA.

FEED-WATER HEATER.

Application filed N ovember 20,

Patented April 14, 1908. 1905, Serial No. 288,265. Renewed August 7,1907. Serial No. 387,507.

To all whom it may concern: close a thermometer to ascertain the tem- Beit known that I, GRANVILLE WILLIAM perature of the heated water. JOHNWHITE, a citizen of the Commonwealth Referring to the accompanyingdrawings, of Australia, residing at Belmore Road, which form part ofthis s ecification: Figure Ryde, in the State of New South Wales, l:.isa vertical sectional elevation of an ex- Commonwealth of Australia,engineer, have I haust pipe such as are in use upon locomoinventedcertain new and useful Improvetive engines. Fi .2:is asimilar section toments in Feed-Water Heaters; and I do here- Fig. 1, but with t einvention applied thereto. Fig. 3:is a horizontal section on line a-a ofFig. 2, taken across the sediment chamber. Fig. 4:is a horizontalsection on line b?!) of Fig. 2, taken across the difand exactdescription 0 the invention, such as will enable others skilled in theart to whichit appertains to make and use the same.

This invention relates to a superheater for holding feed water forboilers, and is serviceable as an attachment to exhaust pipes connectedwith the passages of steam cylinders which are a part of steam engines.Inthe general disposition of its parts, provision is made for theinterposition between divided ortions of the exhaust ipe of a steamdifusion chamber. The base plate of such. chamber carries the inletortion, and the crown plate, the outlet portion of the divided exhaustpi e or pipes. The crown plate is also pierce to receive any desirednumber of tubes which encircle the proximate art of the exhaust pipe. Itis through t ese tubes as well as the centrally situated outlet pipethat the steam passes after its diflu sion within the chamber. Theseparts are wholly inclosed with an outer casing supported u on andattached to a'bottom flange or foun ation plate; such flange likewisesupports the inlet portion of the divided exhaust pipe. It also formsthe bottom of a sediment chamber which is se arated from the maincirculating part of t e heater by the diffusion chamber, a diminishedannular space connecting the two parts. The casing is provided with aremovable cover, ierced to receive the upwardly projecting tu es andexhaust pipe, and may be secured with clamping nuts fixed upon the endsof the tubes, or separate bolts may be provided for the purpose. Theclamping nuts of the tubes are constructed to allow the free exit of thesteam, the outlet orifice being shaped to any suitable design to director divert the fiowZof the escaping steam, as may be desired. Inlet'andoutlet connections are providedfor filling, circulating, discharging andcleansing the superheater. At any suitable part of the casing a gageglass is fixed, adapted to inspace. Fig. 5z-is a horizontal section online cc of Fig. 2, taken across the circulating art of the heater,showing tubes and exaust ipe in crown late of diffusion chamber, a sodiminished annular space. Fig. 6 :is a plan or top view of the outletend of Fig. 2. Figs. 7 and 8:are enlarged details showing in verticalsectional elevation forms of clamping nuts, as in Fig. 2, suitable forsecuring the removable top cover. Fig. 9zis a vertical sectionalelevation of an exhaust steam superheater constructed according to theinvention, as applied to a simple form of exhaust pipe other than shownin Fig. 1. Fig. l0:is an elevation showing the steam diffusion chamberin association with the divided portions of the exhaust pipe, and theencircling tubes represented in Fig. 9, but omitting the outer casingand top cover. Fig. llz-is an enlarged vertical sectional elevation ofthe steam diffusion chamber as in Figs. 9 and 10. Fig. 12:is ahorizontal section on line dd of Fig. 9, taken across the diffusionchamber. Fig. 13:is a horizontal section on line e-e of Fig. 9, takenacross the circulating part of the heater.

Steam engines are constructed in a great variety of forms, having theirexhaust pipes suitably located to meet the requirements of eachparticular form. pipes are necessary, only.

There are instances where the exhaust pipes are made to dischar e thesteam into a smoke box, at a distance i rom the cylinders, as in thecase of marine and portable engines, locomotives or such like, where aforced draft is in operation. It is obvious that superheaters madeaccording to this invention would vary somewhat in the details of theirconstruction when applied to the differin others, a single pipe fusionchamber and diminished annular In some, bifurcated cut classes ofengines; therefore the essential features are shown in the illustrationsas they would appear applied to two selected types.

For the purposes of. this invention it is essential to break thecontinuity of the exhaust pipe at any suitable part of its length, so asto interpose the diffusion chamber A.

In Fig. 1, a bifurcated exhaust pipe com mon to some forms of locomotiveengines is shown in its entirety, so that upon comparison with the otherfigures the feature of the interposed diffusion chamber may be moreclearly discerned. In Fig. 2, the general contour of Fig. 1 is preservedas regards the upper and lower portions of the pipes, which are suitablysurrounded with an outer casing, but the distinctive parts are similarlylettered as for a single pipe of the type shown in Figs. 9 and 10.

The lower portion B of the disconnected exhaust pipe has the flange C,for connecting with a cylinder, two such flanges being necessary when astraddling pipe is used as in Fig. 2.

At its upper end the inlet pipe B is secured to the base plate A of thediffusion chamber A, and the outlet pipe B is united at its lower end tothe crown plate A This plate is suitablypierced to receive thesupplemental steam tubes D, which encircle the outlet pipe. The saidpipe and tubes maybe any desired length and fastened by screwing or suchlike suitable means.

They provide the required heating surface within the circulating portionE, above the diffusion chamber. The whole of these parts are inclosedwithin the casing F, which in Fig. 2 conforms to the distinctive shapeof the double pipe formation, and is supported upon the foundation plateG, which is likewise united to the lower portion B of the exhaust pipe.In Fig. 9, the casing F is shown cylindrical in form supported upon andsecured to the circular foundation plate G. In both types thisfoundation plate forms part of the sediment chamber H.

The whole of the connecting parts would necessarily require to be madewater-tight. The upper ends of pipe B and the tubes D require to becarried beyond the movable top cover I, which may fit loosely if theheater is not to be under pressure but for the purpose of securing itclamping nuts J and K are provided, the former having the straightoutlet J and the latter the horizontal and bell mouth orifice K Theseare serviceable to direct the flow of the escaping steam in any suitabledirection. Figs. 7 and 8 are types of nuts suitable for this purpose. Asa further security the bolts L are provided.

In both types of superheater, the casing F would be the container forwater to be heated with the exhaust steam as it passes through the inletpipe B, and thence into the diffusion chamber A, where expansion takesplace sufficiently to cause it to fill the outlet pipe B and the tubesD, from whence it escapes through the orifices K and J respectively, andalso from the exit orifice of the outlet pipe B Between the circulatingpart E and the sediment chamber H the diminished annular space M isprovided as a means of communication, to enable the sediment to escapedownwardly, whence it may be drawn oil at the outlet pipe 0. The watercirculating chamber, sediment chamber and thin inter vening connectingspace M. are all formed between the said casing on the outer side andthe wall or shell of the steam diffusion cham her and the exhaust pipeon the inner side.

In Fig. 2 the outer casing F shown united with the flanges P, in closeproximity to the diffusion chamber A, and secured with bolls Q, which isregarded as a suitable mode of construction for that particular type.

For filling, circulating, discharging and cleansing the superheatcrsuitable inlet and. outlet pipes R and S are placed in desirablepositions, having the usual stop cocks where required. The downuutrdlydirected pipe R (shown only in Fig. 9) is serviceable for circulatingthe water within the chamber 15, and may be in the form of a coil ifdesired.

As a means for ascertaining the tempera ture of the heated water thegage connections S are affixed to any suitable part of the easing F, andthe gage glass T is adapted to inclose the thermometer. Such connectionswould consist of the well known. devices used for such purposes.

Having now described my invention, what I claim as new and. desire tosecure by Letters Patent is 1. In a feed-water heater, the combinationof an expanded steam diffusion chamber with an exhaust pipe in which itis located and means for the passage of feed water in proximity to saidchamber though exterior thereto and separated from the steam which fiowsthrough the said chamber substantially as set forth.

2. .In a feed-water heater, the combination of an exhaust pipe and adiffusion chamber arranged therein with an outer casing forming a watercirculating chamber between it and the shell of said chamber and aninlet and outlet for pern'iitting the flow of water through said spacesubstantially as set forth.

3. In a feed-water heater, the con'ibination of an exhaust pipe and.a-steam diffusion chamber arranged between sections of the same, with. acasing surrounding said chainber and leaving between it and the wall ofthe latter a water circulating chamber and sediment chambersubstantially as set forth.

4:. In a feed-water heater, the combination of an exhaust pipe and asteam diffusion chamber located between sections of the same with acasing surrounding said chamher and a base plate A and crown pipe Aconnecting said parts as explained, to leave a Water circulating chamberand sediment chamber exterior to said diffusion chamber substantially asset forth.

5. In a feed-water heater, the combination of a steam diffusion chamberwith an exhaust pipe in which it is located, a casing surrounding saidchamber and leaving a water circulating chamber exterior thereto andsupplementary steam pipes which extend from said steam diffusion chamberup through said water circulating chamber substantially as set forth.

6. In a feed water heater the combination of a steam diffusion chamberand a water circulating chamber exterior to and separate from the same,with a removable cover above both of them, supplemental steam pipesextending from said diflusion chamber up through said water circulatingchamber and said cover and nuts above said cover which engage theprotruding upper ends of the said tubes and bear against the said coversubstantially as set forth.

7. In a feed water heater a steam diffusion chamber and an exhaust pipewhich supplies the steam that expands within and flows through the same,in combination with an exterior casing which forms between itand thewall or shell of said diflusion chamber and said pipe awater-circulating chamber, a sediment chamber and an annular space M ofdiminished thickness connecting these two latter chambers substantiallyas set forth.

In testimony whereof I aflix in presence of two witnesses.

GRANVILLE WILLIAM JOHN WHITE.

Witnessesz' JOHN JASPER STONE, JAMES JOHNSON SHUTTLEWORTH.

my signature,

